/*
 * Bytecode Analysis Framework
 * Copyright (C) 2003,2004 University of Maryland
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

package edu.umd.cs.findbugs.ba.type;

import org.apache.bcel.generic.Type;

/**
 * Special type used to represent the "extra" part of a long
 * value.  We say that when a long is stored, local <i>n</i> will
 * have type long, and local <i>n+1</i> will have this
 * type.
 *
 * @author David Hovemeyer
 * @see TypeAnalysis
 * @see TypeFrame
 * @see TypeMerger
 */
public class LongExtraType extends Type implements ExtendedTypes {
	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;
	private static final LongExtraType theInstance = new LongExtraType();

	private LongExtraType() {
		super(T_LONG_EXTRA, "<long extra>");
	}

	@Override
		 public int hashCode() {
		return System.identityHashCode(this);
	}

	@Override
		 public boolean equals(Object o) {
		return o == this;
	}

	public static Type instance() {
		return theInstance;
	}
}

// vim:ts=4
